Apparatus for constructing concrete floors.



N.'F. AMBURSEN. APPARATUS FDR CONSTRUCTING CONCRETE FLOORS.

' APPLICATION FILED SEPT- 13. 1917- t 1,278,0;87. Patented Sept. 10, 1918 2 SHEETS-SHEET 1..

I' VI I\\ I Y jflvervibr:

N. F. A MBURSEN. APPARATUS FOR CONSTRUCTING CONCRETE FLOORS.

Patented Sept. 10,1918,

2 SHEETS-SHEET 2 APPLlCATlON FILED SEPT-13. 1917. 1,2?8,087.

NILS FREDERICK AMBUESEN, OF NEWTON, MASSACHUSETTS, ASSIGNQR TO THE UNI-FORM COMPANY, OF BOSTON,

MASSACHUSEETS.

MASSACHUSETTS, A CORPORATION OF APPARATUS FOR GDNSTRUCTING CONCRETE FLOOR-S.

Specification of Letters ."Patent. Patented Sept, 16, 1918,

Application filed September 13, 1917. Serial l lo. 191,137.

To all whom it may concern Be it known that I, NiLs F. AMBURSEN, a citizen of the United States, and resident of Newton, in the county of Middlesex and State of Massachusetts, have invented a new and useful Improvement in Apparatus for Constructing Concrete Floors, of which the following is a specification. I

' The objectof the present invention, which is an improvement on the apparatus for constructing concrete floors described in my UnitedStates Letters Patent No. 1,216,644. issued February 20, 1917, is to provide means for molding a floor and its supporting beams whereby the depth of the beam boxes may be varied at will.

My invention may best be understood by having reference to several illustrative eni bodirnents of the same shown in the accompanying drawings wherein Figure 1 a transverse section of one embodiment of my invention. Fig. 2 is a longitudinal section taken on the line 2-2 of Fig. 1. Fig. 3 is a longitudinal section of a modification. Fig. 4 is a plan view of another modifi -ation. Fig. 5 is a transverse section taken on the line of Fig. 4. Fig. 6 is a transverse section taken on the line 66 of Fig. 4.

In the particular drawings selected for more fully disclosing my invention, 1, represents the channel irons such as described in my Letters Patent above mentioned, which are suitably spaced and supported by false work (not shown) in the manner described in said atent with their flan 'es 2 2 D 7 extending upwardly. Spanning the space between each pair of adjacent channels are concrete molds herein shown as metallic arch plates 3, 3, the lower edges of each of w rich rest on the webs of the channels against the inner faces of the flanges.

As described in said patent, the concrete is poured in the mold so constructed to form the floor and the beam or joist, the sides of a pair of adjacent arch plates and the web of the cooperating channel constituting the beam box. It is usual to employ tour sizes of arch plates which are (3 inches, eight inches. 10 inches and 12 inches in height, respectively. llowevcr, by providing means for varying the depth of a beam box it is possible to mold beams of the desired thi kness by the use of onlytwo sizes of arch plate, for example: plates 8 inches and 12 -inches in height. By means of the arch plates which are 8 inches in height beams may be molded which are 6 inches thick, as-

ployed and, in like manner, by'means of arch plates 12 inches in height beams 10 well as beams which are 8 inches thick, if a I device 1n the nature of a false bottom is eminches thick as well as beams 12 inches thick may be molded.

Several arrangements may be employed for varying the depth of the beam boxes, each arrangement comprising a member extending throughout the length of each channel or concrete-form support-member and having its edges resting against the sides of two adjacent arch plates or concrete forms, the upper surface of each said member'being located above the base oi each support 1 member.

In Fig. 1 and Fig. 2, I have shown blocks 4, which may be of Wood, placed trans versely in the channels and suitably spaced, said blocks supporting metallic plate 5 about 2 inches above the. upper surface of the web of the channel. Extending across the beam boxes are a series of rods 6, or other suitable men'ibers for supporting the reinforcing rods 7 which, as shown, may be secured in position by the wire loops 8. It will be understood, however, that any suitable means may be employed for spacing the re inforcing rods in the beam boxes, such, for example, as wire chairs, which are customarily employed for this purpose.

In Fig. 3, i represents a filler block about 2 inches in thickness which rests on the Web of the channel and extends throughout the length thereof.

It will be obvious that by either of the means above described the depth of a beam box will be reduced and that, for example,

a beam 6 inches thick may thercby be molded in a box 8 inches deep, or a beam 10 inches thick in a box 12 inches deep, etc.

It IS not necessar however, to employ the-blocks 4 or filler blocks 4 above de-- :4 for his pr pose the clamp mom 3.3 m7- l'aiigeil i'l'iHISIBiSQlV in'zlze el'iennels :smt

veils 11m be employed, the bolts 1% pa" u iiwardly ol'mmgh the webseml the olzi-rn and having the nuts 15 the clecl tliereto wueieby said clamps? are secured. in position.

ll; will lHf ol'ivious that various other means may be employed for naming the depth of the beam boxes and, tiereiiore, I do not limit myself to the ai'n'mgements which I luv, specifically described.

Hm'iiip; thus describe-cl illustrative emboeliznenls of my invention, without, lie-vever limiting the seine thereto, whet I i 4 and Li by Lettem Patent 18? for constructing concrete 1 1g in combination laterally a-form mitt-members, cozy I and. spanning the Dfili of support meme exiending throughout; each support membez? and. 11mresiiing against the sides of i concrete irms, the upper surh said member being located es-+3 of each support member.

aims for constructing concrete rising in combination "ailie arch. plates supportel by mixing the space between each pair 3 ii-lie sides thereof: inside able mti ogtl'i 1 x 5 moving lw edges reel/111g the sides or? {two adjacent m'ol'i plates, the upper, surface of each said member being lf1i43ii above the Web of :1 channel. I

Apparatus foe constructing concrete floors comprising in combination spaced cloumels metallic arch plates supporteol by and 'mmiing the space between each pair of channels with the sides thereof inside the fia-ng s of the: channels, and a, plate extending throughout the length of each channel and having its edges resting against flle sides of mm adjacent ai'ell plates, the upper surface of ezioh said plate being located above the-Well of 3 channel.

l. Apparatus for commenting concrete floors comprising in .combination laterallyspnoml oonei-etefulmrn supporemelnbers, eonoi'ete forms supported by' andspanning the space between each pair of support mem bers, a plate extending throughout the length. of each support member and having edges res against the sidesv of two adjacent comm-e e forms and means for bolding each said plate above the base of a sup" port xxaemben .z fippamtus for constructing conorete floors comprising in con'ibinotion spaced channels, metallic arch plates supported by 11d spanning the space between each pair cmnnels with the sides thereof inside flanges of the channels, a plaoo extending throughout the length of each channel and having its eaiges resting against, the sides of two adiaceni; are}; plates, bolts extending upworo through the ebs of each channel, and moans eoiiuemtingwitlz each boi for supporting said plates above one webo said channels, respectively.

In testimony whereof 1 have hereunto subscribed my name M'LS FEEDEREGK MEBURSEH. 

